On Friday, the US branch of Best Buy will be launching another promotion in which shoppers can get a "free" iPhone 5. People who bring in an iPhone 4 or 4S in good condition can get at least $150 in credit, which is enough to cover most of the cost of a 16GB iPhone 5 with Best Buy's current $50 instant rebate. Should a used iPhone be worth more than $150, Best Buy <a href="http://www.usatoday.com/story/tech/2013/06/19/best-buy-free-iphone-trade-in/2439665/">says</a> it will make up the difference with a gift card.<br /><br />iPhone 5 buyers must be eligible for an upgrade or a new account, and cover extra costs like taxes and carrier fees. Only AT&T, Sprint, and Verizon models are available, excluding carriers accessible elsewhere, like T-Mobile or Cricket.<br />
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Best Buy's <a href="http://macnn.com/rd/288143==http://www.electronista.com/articles/13/05/31/deal.should.cover.most.of.16gb.iphone.5s.price/" rel='nofollow'>original iPhone trade-in promotion</a> lasted just a single day. The retailer says it was the biggest ever for its trade-in program however, and is planning to keep the new one going for nine days.